Cutter and matcher head.



S. CLINE.

CUTTER AND MATGHER HEAD. V

AI'PLIGATION TILED NOV. 5, 1908.

Patented Sept. 7, 1909.

4 SHEETS-SHEET 1.

mnnzw. a. GRAHAM c0. FliOYU-LITIIDGRAPHERB. wnsumcww Sag/0rd 67020.

atto'bmug s. OLINE. CUTTER AND MATGHER HEAD.

APPLICATION FILED NOV. 5, 1908.

t 9 IHMW 4 4 6 M 3 y 9H d SW 7 f w m a s 2. W 6 r/ 7 a 9 z 2x3 l'neaoeo('1 traumas ANDREW. a own 00 Mom-unocmwzns. wnsmuman. n. c.

S. GLINE. I CUTTER AND MATCHBR HEAD.

APPLICATION FILED NOV. 5, 1908.

Patented Sept. 7, 1909.

I nvemtoz dayord 671220.

fifth/nu;

S. GLINB.

CUTTER AND MATGHER HEAD.

APPLICATION FILED NOV. a, 1908.

Patented Sept 7, 1909. 4 SHEETS-SHEET 4.

Snow rte; Bazyarr] ('Zziza Wihwoooo Quorum;

NTTED STATES PATENT OFFICE- SANFORD CLINE, OF HENRY, NORTH CAROLINA.

CUTTER AND MATCHER HEAD.

Application filed November 5, 1908.

To all whom it may concern:

Be it known that I, SANFORD CLINE, a citizen of the United States ofAmerica, residing at Henry, in the county of Lincoln and State of NorthCarolina, have invented new and useful Improvements in Cutter andMatcher Heads, of which the following is a specification.

This invention relates to cutter heads and the object of the inventionis to provide a cutter head and bit therefor of improved constructionwhereby the bit may be readily secured to the head against thepossibility of accidental or casual movement and thereby prevent thesame from being out of adj ustni ent.

With the above and other objects in view, the nature of which will morefully appear as the description proceeds, the invention consists in thenovel construction, combination and arrangement of parts as hereinafterfully described, illustrated and claimed.

In the accompanying drawings :-Figure 1 is a side elevation of a cutterhead complete and illustrating the present invention. Fig. 2 is acentral longitudinal section through the same on the line 2 2 of Fig. 4.Fig. 3 is an inner face view of one of the bit planing members. Fig. 4is a plan view showing the plurality of bits applied to one of theclamping members. Fig. 5 is a plan view of a complete cutter headapplicable to an ordinary arbor. Fig. 6 is a detail perspective view ofone of the grooving bits. Fig. 7 is a similar view of one of the tongueforming bits. Fig. 8 is a diagrammatic view illustrating the dispositionof the tongue forming bits relative to the work. Fig. 9 is a similarview of the grooving bits. Fig. 10 is a similar view of the planing andjointing bits. Fig. 11 is a plan view of a cutter head body especiallyadapted for holding planing, heading or molding bits. Fig. 12 is asectional View similar to Fig. 2, on the line 1212'o'f Fig. 14:illustrating the modified forms of clamping members. Fig. 13 is adiametrical section through one of the modified clamping members. Fig.14 is a plan view of the same.

The cutter head which is best illustrated in Figs. 1 and 2 comprisesessentially a tubular body 1 having formed integrally therewith at oneend a flange 2 and having the other end closed as shown at 3 with theeX- ception of a central threaded opening 4: which will hereinafterappear. The body Specification of Letters Patent.

Patented Sept. *7, 1909.

Serial No. 461,179.

of the cutter head thus far described is of a construct-ion adapting itto be drop-forged thereby adding greatly to the strength and durabilityof the cutter head as a whole.

Associated with the body 1 of the cutter head and encircling the sameare bit cla1nping members 5 and 6 which are the counterparts of eachother, each of said clamping members embodying a plain outer surfacewhile the inner surface thereof comprises a flange 7 encircling thecentral opening 8 thereof through which the cutter shaft or arbor 9passes, and outer flanged segments or bit holding shoulders 10, theouter surfaces of which are flush with the outer edge or periphery ofthe clamping'members, as shown in Fig. 3, while the opposite extremitiesof the segments 10 are adapted to engage the cutting bits as willhereinafter appear.

Each of the cutting bits as shown in Figs. 4, 6 and 7 embodies a shank11 which is flat and provided at its opposite edges with notches 12 inwhich the opposite extremities of the flange segments 10' are receivedas shown clearly in Fig. 1. The inner edge of each shank 11 is cut awayon a curve or concave as shown at 13 to fit snugly against the innerannular flange 7 of its respective clamping members 5 or 6. Furthermore,the meeting edges 14 of the shanks are provided with interlockingtongues 15 and recesses 16 and it will thus be seen that the cuttingbits are not only interlocked with the clamping members 5 and 6 but theyalso have an interlocking engagement with each other thereby preventingpossibility of casual relative displacement between the bits and theclamping members of the cutter head.

17 designates a clamping nut which is arranged at the sides of theclamping members 5 and 6 opposite the flange 2 and by means of which theclamping members are forced tightly against the flange 2 and securelyheld, at the same time securely clamping the cutting bits between themembers 5 and 6, the nut 17 screwing upon a threaded portion 18 on thebody of the cutter head. Spacing washers 11 in any number and in ansuitable thickness may be interposed between the two sets of bits 11 tocause the latter to cut a groove or a tongue of the desired width.

To one side of the clamping nut 17 there is a clamping collar 19 whichencircles the body 1 loosely but is held securely thereon ing bit whichcomprises an outer or periph-- by means of a set screw 20. Opposite theset screw 20 the collar 19 is provided with a hole through which isinserted a clamping screw 21 said screw passing through. a hole in thebody 1 to tighten against the shaft or arbor 9 whereby the cutter headis secured to the shaft to rotate therewith.

On the closed end of the body 1 there is fitted a cap 22 which encirclesthe end of the body as shown in Fig. 2 and is held thereon by means of acap collar 23 secured around the cap by means of a set screw 24.Opposite the set screw 24 is a clamping screw 25 passed through thecollar 23 and binds at its inner end against the body 1 of the cutterhead thus rendering the cap 22 adjustable on the body 1. Passing throughthe outer end of the cap is an adjusting screw 26, said screw beingthreaded in the cap and adapted to be locked by means of a jam nut 27which bears against the outer end of the cap. The cutter head 1 isgraduated as shown at 1 to provide for an accurate up and downadjustment of the cutter head. The screw 26 is turned until the properregistration on the scale 1 has been obtained when the jam nut 27 istightened. The cap or thimble 22 may then be loosened by screw 25 andrun downward until its bottom edge registers with the desiredgraduations at l whereupon'saidcap is fastened by the screw 25 and thehead is clamped .to the arbor by the screw 21, the

scale 1 showing how high'the head is cut-' ting. The raising andlowering adjustments for dilferent jobs of work are elfected in theaforesaid manner. The inner end of the screw is pointed, as shown inFig. 2 and bears against the shaft or arbor 9.

In Fig. 6 I have shown a grooving bit which in addition to the shank l1hereinbefore particularly described comprises a groove formingperipheral portions 28 and an edge dressing extension 29 disposedsubstantially at right angles to part 28. The cutting edge 30 or pointof the bit is inclined as shown in Figs. 4 and 6 and merges into aclearance notch or space 31 in the forward edge of the tongue while theouter edges of the parts 28 and 29 are inclined inwardly as bestillustrated in Fig. 4 wherein the dotted circle 32 coinciding with theextreme points of the bits indicates the path of movement of such pointsof the bits, 33 indicating the inward pitch of the outer edges of theparts 28 and 29 of the bit. By this arrangement only the extreme pointsor edges of the bits perform the cutting operation, ample clearancebeing left for the remainder of the outer edge portions of the bits.

In Fig. 7 I have illustrated a tongue formeral portion 34 which cuts anddresses one side of the tongue, as indicated by dotted lines in Fig. 7.From the advance or cutting edge of the part 34 the forward edge of thebit inclines backward or is undercut as shown at 35 to cut the side ofthe tongue. The bit is offset inwardly as shown at. 36 in. Fig. 7 to cutthe extreme edge of the tongue and round off one of the corners thereof.

In addition to the inward pitch of the outer edges of the bits, theouter portions of the bits are set at diverging angles as shown in Figs.8 and 9 whereby only the extreme cutting point of each bit is used informing a groove or tongue, the angular lateral pitch illustrated inFigs. 8 and'9 giving the necessary clearance. In the' casejof ordinaryplaning bits 36 this lateral pitch is not necessary and therouterportions orv edges of the bitsmay be arranged in line with the path ofmovement of. the cutter head as illustrated in Fig. 10. here more thanone circular series of bits is .to be mounted on the same cutter head, aplurality of bit clamping members 37 in the form of slide collars may beplaced on the body of the cutter head as illustrated in Fig. 11 andsuitable planing or beading or molding bits may be mounted between thesaid clamping members or collars to be formed in the direction of afixed collar 38. on the body of the head and held by means of a clampingnut 39 threaded on the cutter head.

An economical form of cutter head is illustrated in Fig. 5 in which thecutting bits are held between a pair of clamping members 40 which aresecured together by screws 41 or their equivalent passing through theopposite clampingmembers andengaging and interlocking with the bits heldbetween the clamping members. The form of cutter head shown in Fig. 5 iswell adapted for use in connection with the construction illustratedinFig. .11, which provides for the mounting of a plurality of individualcutter heads on a common body.

Instead of providing segments 10 immediately adjacent to the outerperipheraledge of the clamping members, said segments may be set inwarda suitable distance from the;

outer edges as shown at 10 in Figs. 13 and 14. Furthermore, in lieu ofproviding the clamping members with theflanges 7 surrounding the centralopenings therein, said members maybe rabbeted around their centralopenings as shown at 7 in Figs. 12, 13 and 14 and the cutting bits maybe provided at their inner edges with segmental flanges 13 which fitinto the rabbet 7 and secured to hold said bit against outward movementwhile the segments 10 properly position the bits against lateralcircumferential movement relative to the clamping members.

I claim 1. A head of the class described comprising clamping members oneof which is movable toward and away from the other and provided withconcentric segmental shoulders, and bits having shanks held flatwisebetween the clamping members and provided with notches with which saidshoulders engage 2. A head of the class described comprising bitclamping members one of which is movable toward and away from the otherconcentric segmental bit holding shoulders clamping said members, andbits having their shanks held flatwise between said clamping members andprovided at opposite places with notches to receive the extremities ofthe bit holding shoulders and also provided with means whereby said bitshave an interlocked engagement with each other.

In testimony whereof I aflix my signature in presence of two witnesses.

SANFORD CLINE.

lNitnesses J. C. VANs'roRY, 1)AVID A. GooDNow.

